Demi Lovato's 'Skyscraper' was inspired by all of the people who didn't stand by her when she went to rehab.

The singer and actress was admitted to a facility last November for three months to receive treatment for her eating disorders and self-harming and although she had incredible support from her family and close friends, Demi admitted there were many "artificial" pals who ignored her when she needed them most.

She explained: "It's to every person who tried to bring me down. Everyone has the bully or the mean girl or the ex-boyfriend who tried to bring them down. For me, I think of the people who really weren't there for me when I went into treatment. It was a really dark time for me because I had only a few people - I had surrounded myself with so many artificial friendships. It's about those people too."

Demi, 19, has previously dated Joe Jonas and has reportedly rekindled her relationship with her 31-year-old former boyfriend Wilmer Valderrama, but says anyone who wants to be her boyfriend will have to be prepared to deal with her emotional baggage.

She told US Glamour magazine: "[I need] someone who's not only supportive in my career, but also in my emotional recovery. It's a big responsibility dating me. Because I come with a little bit of baggage, you know? I'm completely open. I'm honest about the Journey I've been on, so I definitely don't take dating lightly anymore. And they have to make me laugh!"